6 Marital Status Options: Tax Filing and Legal Rights

Most official forms in the United States recognize six marital status options: single, married, divorced, widowed, legally separated, and registered domestic partner or civil union. Which one applies to you determines how you file your taxes, whether you qualify for certain government benefits, and what legal rights and obligations you carry toward another person. The IRS looks at your status on December 31 to decide your filing options for the entire year, so even a late-December wedding or finalized divorce reshapes the whole tax year.¹

Single

“Single” applies to anyone who has never been legally married. It also covers people whose previous marriage ended through divorce or annulment, provided they haven’t remarried. Dating someone, living together, or having children together doesn’t change your status. Only a legal marriage does that.

Annulment is worth understanding because it works differently from divorce. Where divorce ends a valid marriage, an annulment treats the marriage as though it never legally existed. Courts grant annulments only under narrow circumstances: one or both spouses lacked mental capacity to consent, a spouse was underage without parental consent, the marriage was induced by fraud or coercion, or the marriage was bigamous or incestuous. An annulled person’s status reverts to “never married” rather than “divorced,” which can affect everything from religious standing to benefit eligibility.

Single individuals have full autonomy over their finances and legal decisions. No one has a spousal claim to your income, property, or estate, and no court needs to divide anything if a relationship ends. The trade-off is that you miss the tax advantages and legal protections that come with marriage.

Married

“Married” means you’re legally joined to another person through a ceremony or process your state recognizes. Since the Supreme Court’s 2015 decision in Obergefell v. Hodges, every state must license and recognize marriages between two people regardless of sex.² Marriage creates a web of legal rights and responsibilities between spouses, including inheritance rights, the ability to make medical decisions for each other, and shared liability for certain debts.

How much responsibility you carry for your spouse’s debts depends on where you live. In the nine community property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin), most debts either spouse takes on during the marriage belong to both of you, even if only one signed the paperwork. Creditors in those states can pursue marital assets and the income of both spouses. In the remaining states, which follow common law property rules, a debt generally belongs only to the spouse who incurred it, unless it was for a family necessity like housing or food for the household.

Marriage also triggers spousal privilege, which protects private communications between spouses and can prevent one spouse from being compelled to testify against the other in criminal proceedings. The communications privilege survives even if the marriage later ends. The right to refuse testimony exists only during a valid marriage.

Common Law Marriage

About a dozen states still recognize common law marriage, in which a couple becomes legally married without a ceremony or marriage license. Requirements vary, but generally both partners must be of legal age, agree to be married, live together, and present themselves publicly as a married couple. States that currently allow common law marriage include Colorado, Iowa, Kansas, Montana, New Hampshire, South Carolina, Texas, and Utah, with Rhode Island and Oklahoma recognizing them through case law.³

Even if your state doesn’t permit common law marriage, it must recognize one validly established in a state that does, under the Full Faith and Credit Clause of the Constitution.⁴

Divorced

“Divorced” applies to anyone whose marriage has been legally terminated by a court. Divorce dissolves the legal bond entirely, ending spousal rights like inheritance, medical decision-making authority, and shared benefit eligibility. Once a divorce is finalized, you’re legally single and free to remarry.

Divorce doesn’t always produce a clean break, though. A divorce decree can impose ongoing obligations that never-married single people don’t face, including spousal support, child support, and specific divisions of retirement accounts or property. Violating those terms is contempt of court, not just a broken promise. For tax purposes, if your divorce is final by December 31, the IRS considers you unmarried for the entire year.⁵

Widowed

“Widowed” describes someone whose spouse has died and who hasn’t remarried. Like divorced individuals, widowed people are legally single and free to marry again. The financial picture, though, looks quite different.

Widowed individuals may qualify for Social Security survivor benefits, though the marriage typically must have lasted at least nine months before the spouse’s death. That requirement is waived if the death was accidental or occurred in the line of military duty.⁶ Widowed people also get a meaningful tax break. For two years after the year of death, you can file as a qualifying surviving spouse if you have a dependent child living with you and you paid more than half the cost of maintaining your home.⁷ That status uses the same standard deduction and tax brackets as married filing jointly, which can save thousands of dollars during a difficult transition.

Legally Separated

“Legally separated” applies to couples who remain technically married but have obtained a court order formalizing their decision to live apart. The separation agreement typically addresses finances, property division, and child custody without dissolving the marriage. Because the marriage still legally exists, neither spouse can remarry.

Not every state offers legal separation. Roughly a dozen states have no formal legal separation process at all, and some offer alternatives under different names, such as “separate maintenance,” which functions similarly.

Couples choose legal separation over divorce for several reasons. Some have religious objections to divorce. Others want to preserve access to a spouse’s employer health insurance plan, since many insurers cover legally separated spouses but not ex-spouses. Legal separation can also serve as a trial period before committing to a permanent split.

For tax purposes, the IRS treats a legal separation under a decree of divorce or separate maintenance the same as being unmarried, so you cannot file jointly.¹ This catches some people off guard. You’re still married for purposes of remarriage, but the IRS considers you single for filing purposes.

Registered Domestic Partner or Civil Union

“Registered domestic partner” and “civil union” are state-level legal statuses that grant some or all of the rights and responsibilities of marriage under state law. Availability and scope vary widely by jurisdiction. Some states offer these arrangements only to same-sex couples, others to any couple, and many don’t offer them at all.

The critical limitation is at the federal level. The IRS does not treat registered domestic partners or civil union partners as married.⁸ That means you can’t file a joint federal tax return, you don’t qualify for spousal Social Security benefits, and you can’t sponsor your partner for immigration purposes. At the state level, these partnerships often provide rights like hospital visitation, healthcare decision-making, and inheritance protections, but the federal gap is significant enough that many couples who initially registered have since chosen to marry.

How Marital Status Affects Your Tax Filing

Your marital status and your tax filing status are related but not identical. The IRS offers five filing statuses, and your marital status on December 31 determines which are available to you.¹ The differences in standard deduction alone make this worth understanding:

Single, available if you’re unmarried, divorced, or legally separated on December 31. The 2026 standard deduction is $16,100.⁹
Married Filing Jointly, available to married couples who report all income and deductions on one return. The 2026 standard deduction is $32,200.⁹
Married Filing Separately, available to married couples who choose to file individual returns. The standard deduction drops to $16,100, and several tax credits become unavailable or limited.⁹
Head of Household, available to unmarried individuals who pay more than half the cost of maintaining a home for a qualifying dependent. The 2026 standard deduction is $24,150.⁹
Qualifying Surviving Spouse, available for two tax years after the year your spouse died, if you have a dependent child living with you and you haven’t remarried. The standard deduction matches married filing jointly at $32,200.⁷

One scenario trips people up. If you’re still legally married but living apart, you might qualify to file as head of household rather than married filing separately. To do so, you must have lived apart from your spouse for the last six months of the year, filed a separate return, and paid more than half the cost of maintaining a home for your dependent child.¹ The difference between head of household and married filing separately is substantial: an extra $8,050 in standard deduction for 2026, plus access to more favorable tax brackets.

How Marital Status Shapes Benefits and Legal Rights

Beyond taxes, your marital status affects a wide range of legal protections and financial benefits. Most of these tilt heavily toward legally married couples, which is why the distinction between marriage and other statuses carries real financial weight.

Getting married or divorced counts as a qualifying life event for health insurance purposes, opening a 60-day special enrollment window outside the normal open enrollment period. You can use that window to join your spouse’s plan, add them to yours, or switch to a new plan entirely. Legal separation doesn’t always trigger this window, and domestic partnership treatment varies by insurer.

Social Security provides spousal and survivor benefits only to legally married couples. A surviving spouse can receive benefits based on the deceased spouse’s earnings record, but the marriage generally must have lasted at least nine months before the death.⁶ Divorced individuals can also claim benefits on an ex-spouse’s record if the marriage lasted at least ten years and they haven’t remarried. Domestic partners and civil union partners don’t qualify for any of these benefits.

Married couples also enjoy spousal privilege in court proceedings. Private communications between spouses are protected from disclosure, and in criminal cases, a spouse generally can’t be forced to testify against the other. The communications privilege survives divorce, but the right to refuse testimony disappears once the marriage ends. Legally separated couples retain both privileges since they’re still technically married. Domestic partners have no equivalent protection under federal law.

For estate planning, married spouses inherit from each other automatically under intestacy laws if there’s no will, and the federal estate tax allows an unlimited marital deduction for transfers between spouses. Unmarried partners, including registered domestic partners, receive none of these automatic protections and need explicit wills, beneficiary designations, and powers of attorney to approximate what marriage provides by default.

1
Office of the Law Revision Counsel. 26 U.S. Code 7703 – Determination of Marital Status
2
Justia. Obergefell v Hodges – 576 U.S. 644 (2015)
3
National Conference of State Legislatures. Common Law Marriage by State
4
Legal Information Institute (Cornell Law School). Common Law Marriage
5
Internal Revenue Service. Publication 501 – Dependents, Standard Deduction, and Filing Information
6
Social Security Administration. Handbook Section 404 – Exception to the Nine-Month Duration of Marriage Requirement
7
Internal Revenue Service. Filing Status
8
Internal Revenue Service. Answers to Frequently Asked Questions for Registered Domestic Partners and Individuals in Civil Unions
9
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026